Read Chip Temperature Sensor on nrf52832

RE: Read Chip Temperature Sensor on nrf52832

Simonr — Fri, 12 Apr 2019 12:08:05 GMT

Hi Alfonso

You have to enable and set the priority with functions that aren't using the SoftDevice. Using NVIC_SetPriority() and NVIC_EnableIRQ() instead of the sd_ "versions" should work.

Best regards,

Simon

RE: Read Chip Temperature Sensor on nrf52832

alima — Fri, 12 Apr 2019 03:42:09 GMT

Hello Simonr,

In my first post I am enabling DATARDY inside init() function call with this:

NRF_TEMP->INTENSET |= TEMP_INTENSET_DATARDY_Enabled;

I am also starting a new measurement inside get_temperature() with this code:

NRF_TEMP->TASKS_START = 1;

But as I stated before, the interrupt handler never gets called. I guess it is because I am not using the softdevice and so these function calls inside init() have no effect:

sd_nvic_SetPriority(TEMP_IRQn, APP_IRQ_PRIORITY_LOW); sd_nvic_EnableIRQ(TEMP_IRQn);

But I have tried removing them and still my interrupt handler never gets called. I am having a look to the SDK source code and I am trying to understand how to do this without the softdevice enabled, but it doesn't seem to be any information about this.

Can you please let me know what I am doing wrong?

Regards,

Alfonso

RE: Read Chip Temperature Sensor on nrf52832

Simonr — Thu, 11 Apr 2019 12:02:50 GMT

The temperature example states:

/* Busy wait while temperature measurement is not finished, you can skip waiting if you enable interrupt for DATARDY event and read the result in the interrupt. */

You have to enable DATARDY in order to read the temperature by using interrupt.

Best regards,

Simon

RE: Read Chip Temperature Sensor on nrf52832

alima — Thu, 11 Apr 2019 05:52:09 GMT

Hi Simonr,

That's true, I haven't enabled the SD, but I am actually trying to read this sensor without SD enabled. Do you know how I can do that? I have been looking into the documentation and couldn't find anything.

Thanks in advance.

Best regards,

Alfonso

RE: Read Chip Temperature Sensor on nrf52832

Simonr — Mon, 08 Apr 2019 08:57:54 GMT

Hi Alfonso

It seems you are calling a few SoftDevice functions, but I don't see that you have enabled the SoftDevice. Please see the nrf_sdh_enable_request() function in nrf_sdh.c for how to do this.

Best regards,

Simon

RE: Read Chip Temperature Sensor on nrf52832

alima — Fri, 05 Apr 2019 14:47:41 GMT

Hello Simonr,

Thanks for your reply.

I have based my implementation on that example. Also, I am calling those functions: first init() and then get_temperature(). I have verified this with GDB. I have set breakpoints for these 3 functions and I see how init() and get_temperature() are called, but TEMP_IRQHandler() is never called.

RE: Read Chip Temperature Sensor on nrf52832

Simonr — Fri, 05 Apr 2019 09:16:50 GMT

Are you calling any of these functions in your main(void) function? I suggest you take a look at our temperature example to see how it is done there. It can be found in this path when you have downloaded our SDK: \nRF5_SDK_15.2.0_9412b96\examples\peripheral\temperature

Best regards,

Simon